| 液态氦冲击压缩性理论计算 |
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| 引用本文： | 刘福生,清泉,经福谦.液态氦冲击压缩性理论计算[J].高压物理学报,1995,9(2). |
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| 作者姓名： | 刘福生 清泉 经福谦 |
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| 作者单位： | 中国工程物理研究院流体物理研究所,四川联合大学应用物理研究所 |
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| 基金项目： | 冲击波物理与爆轰物理实验室科研基金 |
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| 摘 要： | 采用孤立氦原子两体排斥势和微扰变分液体理论计算了液态氦一次和二次冲击压缩曲线。与文献4]实验结果比较发现,在相同体积下,理论计算压力偏高30%~50%,表明高温高密度状态下,氦原子间的等效排斥势比孤立氦原子两体排斥势低很多。文中分析讨论了引起液态氦在高压下异常“软化”现象的可能机制和理论处理方法。
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| 关 键 词： | 液氦 冲击压缩性 排斥势 |
| 收稿时间： | 1995-01-03; |
THEORETICALCALCULATIONFOKTHEHUGONIOT CURVESOFLIQUIDHELIUM |
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| Liu Fusheng,GouQingquan,Jing Fuqian.THEORETICALCALCULATIONFOKTHEHUGONIOT CURVESOFLIQUIDHELIUM[J].Chinese Journal of High Pressure Physics,1995,9(2). |
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| Authors: | Liu Fusheng GouQingquan Jing Fuqian |
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| Institution: | 1. Laboratory for ShockWave and Detonation Physics Research, Southwest Institute of Fluid Physics, Chengdu 610003, China;2. Institute of Applied Physics, Sichuan Union University, Chengdu 610065, China |
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| Abstract: | The variational fluid perturbation theory is used to calculate the single and double shock Hugoniot curves of liquid helium by means of a two-body potential function. It is found that the theoretical predictions are 30%～50% higher than the measurements at the same volume. It shows that the effective potential of two atoms, which are at high densities and temperatures, is much lower than that of two isolated ones. The physical mechanism which probably causes this unusual "soften" phenomena and its theoretical treatment methods are discussed as well. |
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| Keywords: | liquid helium shock compression repulsive potential |
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